commit ac81fa0d2b4acc134bccb2b557f5305e86f4d84a
author Andre Heider <a.heider@gmail.com> Fri Sep 11 06:35:10 2020 +0200
committer Stefan Roese <sr@denx.de> Thu Sep 24 10:13:42 2020 +0200
tree 3a386038299c0b3e9fc3b43a157fc8517d5a6d5a
parent 9f627a5585f4a7a6d7dcab7fad20a42ed1ede62a

arm: mvebu: Espressobin: Set environment variable fdtfile

Required for the generic distro mechanism.

Linux ships with 4 variants:
marvell/armada-3720-espressobin-v7-emmc.dtb
marvell/armada-3720-espressobin-v7.dtb
marvell/armada-3720-espressobin-emmc.dtb
marvell/armada-3720-espressobin.dtb

Use available information to determine the appropriate filename.

Fixes booting GRUB EFI arm64 on Fedora.

Reported-by: Dennis Gilmore <dennis@ausil.us>
Signed-off-by: Andre Heider <a.heider@gmail.com>